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Finding the Fourth Proportional to 18,398.98, 27,599.12 and 5,917.33

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Solution

The fourth proportional to 18,398.98, 27,599.12 and 5,917.33 is: 8,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.98 : 27,599.12 = 5,917.33 : x
  2. Step 2: Convert to fraction form
    18,398.98/27,599.12 = 5,917.33/x
  3. Step 3: Cross multiply
    18,398.98x = 27,599.12 × 5,917.33
  4. Step 4: Simplify right side
    18,398.98x = 163,312,933.17
  5. Step 5: Solve for x
    x = 163,312,933.17/18,398.98
  6. Step 6: Final answer
    x = 8,876.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.